Toxic air pollutants are poisonous substances in the air that come from natural sources (for example, radon gas coming up from the ground) or from manmade sources (for example, chemical compounds given off by factory smokestacks) and can harm the environment or your health.
Subsequently, Scorpius X-1 was discovered in 1962 by a team, under Riccardo Giacconi, who launched an Aerobee 150 sounding rocket carrying a highly sensitive soft X-ray detector designed by Frank Paolini.
Makemake was discovered on March 31, 2005, by a team lead by Michael Brown. A public announcement of its discovery was made four months later on July 29, 2005, the same day as Eris was announced. It was given the provisional designation 2005 FY 9.